18693404345151 has 12 divisors (see below), whose sum is σ = 28589912528112. Its totient is φ = 11729194883136.

The previous prime is 18693404345137. The next prime is 18693404345159. The reversal of 18693404345151 is 15154340439681.

18693404345151 is a `hidden beast` number, since 1 + 8 + 6 + 93 + 4 + 0 + 4 + 34 + 515 + 1 = 666.

It is not a de Polignac number, because 18693404345151 - 2⁶ = 18693404345087 is a prime.

It is a super-2 number, since 2×18693404345151² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18693404345159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61089556531 + ... + 61089556836.

It is an arithmetic number, because the mean of its divisors is an integer number (2382492710676).

Almost surely, 2^{18693404345151} is an apocalyptic number.

18693404345151 is a deficient number, since it is larger than the sum of its proper divisors (9896508182961).

18693404345151 is a wasteful number, since it uses less digits than its factorization.

18693404345151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122179113390 (or 122179113387 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 18693404345151 in words is "eighteen trillion, six hundred ninety-three billion, four hundred four million, three hundred forty-five thousand, one hundred fifty-one".